I think, you don't need it. I know a lot of people, who've used the standart size and everything was fine)But if you decide to make helmet the same way as me, you'll need to add a detail in the back of helmet (keyhole) because of specific size of rollerblade helmet. That's not a big proplem, you'll understand what i'm writing about

You really need to work on accuracy, vod)Glue doesn't make your model look better, so you should try to use it less. But you're only studying, of course, you can better, you just need more practice and everything will be awesome!)

Oh, sorry, didn't understand your questions. Just find the templates of Boba Fett's helmet and cut them out, redraw on cardboard or PVC and then glue on helmet, after that you should craft depending on situation, use your imagination and improvisation ;D

Hi! Russia is not always covered with snow, just only in winter. And there is no bears on the streets ;DThe photos were taken in one nice place "Поджуково", you can Google it if you want to see more pictures. Anyway, how's your costume going, is there anything new? About RC backpack: there is one more interesting variant, that's Fixer-style one